Submillimeter Class II methanol masers near the massive protostar S255IR NIRS3: evolution and excitation of the $J_1-J_0$ A${}^{-+}$ series and a new maser line at 345.919 GHz

I. I. Zinchenko, S. V. Salii, A. M. Sobolev +3

We present the results of the further investigation of the Class II methanol maser emission in the $14_1-14_0$ A${}^{-+}$ transition at 349.1 GHz discovered in 2016 in the remarkab…